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Selective laser melting forming method of multi-material part

A laser selective melting, multi-material technology, applied in the field of parts forming process, can solve the problems of low bonding strength between materials, too simple shape of parts, and few types of materials to choose from, to increase the optional range and increase the bonding strength. , the effect of high-precision forming

Inactive Publication Date: 2020-04-21
XIAN SPACE ENGINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the modern industry has higher and higher requirements for product functions and performance, it is difficult for parts made of a single material to meet the needs of use. Therefore, the forming method of multi-material parts has increasingly become a hot spot of concern.
At present, the methods that can be used for forming multi-material parts mainly include centrifugal casting method, physical and chemical vapor deposition method, self-propagating high-temperature synthesis method, powder metallurgy method, plasma spraying method, laser cladding method, etc., but these methods generally have different types of materials to choose from. Less, low bonding strength between materials, uncontrollable material distribution, too simple shape of parts, dimensional accuracy of parts cannot be guaranteed, etc.

Method used

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  • Selective laser melting forming method of multi-material part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Forming of a copper and stainless steel sandwich part:

[0046] S1: Part model design:

[0047] When modeling, in the modeling software, according to the functional properties of the parts to be designed, the copper and stainless steel materials are combined and arranged, and the design criteria of strength, weight, size and other related factors are integrated to optimize the overall design. A part model with information such as material distribution, structural features, datum positions, and dimensional data.

[0048] S2: Acquisition of process model: According to the shape, size and stress change rules of copper and stainless steel materials and interlayer characteristics during the laser selective melting and forming process, perform size and shape compensation and chamfering settings on the part model designed in step S1; Add margins to the parts that need to be machined after forming; finally add positioning and anti-deformation supports as needed to obtain a pro...

Embodiment 2

[0056] Forming of a Ti3Al and TC11 gradient part:

[0057] S1: Part model design:

[0058] When modeling, Ti3Al and TC11 materials are combined and arranged in the modeling software according to the functional properties of the parts to be designed, and the design criteria of strength, weight, size and other related factors are comprehensively optimized to obtain the A part model with information such as material distribution, structural features, datum positions, and dimensional data.

[0059] S2: process model acquisition:

[0060] According to the shape, size and stress change rules of Ti3Al and TC11 materials during the laser selective melting and forming process, the size, shape compensation and chamfering of the part model designed in step S1 are performed; after forming, the parts that need to be machined are made Add a good margin; finally, add positioning and anti-deformation supports as needed to obtain a process model including part model information and the above...

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Abstract

The invention relates to the field of a part forming process, and discloses a selective laser melting forming method of a multi-material part. The method comprises the following steps of S1, part model design, wherein during modeling, materials meeting forming needs are combined to be arranged according to the proper distribution rule, and part model design is finished in an optimized manner; S2,process model obtaining, wherein a designed part model is subjected to size and shape compensation, chamfering, remaining adding, process support design and the like, and a process model is obtained;S3, control file generation, wherein the obtained process model is subjected to layered slicing, the material kind, material distribution and material boundary information contained in each layer areextracted, and a control file guiding an additive manufacturing forming process is generated; S4, additive manufacturing forming; and S5, forming aftertreatment. According to the method, through the selective laser melting forming technology, the high-precision high-quality multi-material part can be formed.

Description

technical field [0001] The invention belongs to the field of parts forming technology, and in particular relates to a method for forming multi-material parts. Background technique [0002] Multi-material parts, also known as heterogeneous material parts, are a type of functional parts that are composed of a variety of materials distributed according to certain rules, and have the characteristics of material control, shape control, and controllability. As the modern industry has higher and higher requirements for product functions and performance, it is difficult for parts made of a single material to meet the needs of use. Therefore, the forming method of multi-material parts has become a hot spot that people pay more and more attention to. At present, the methods that can be used for forming multi-material parts mainly include centrifugal casting method, physical and chemical vapor deposition method, self-propagating high-temperature synthesis method, powder metallurgy meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F3/24B33Y10/00B22F7/02B22F7/06
CPCB22F3/24B33Y10/00B22F7/02B22F7/06B22F2003/248B22F10/00B22F12/55B22F10/73B22F12/53B22F10/66B22F10/43B22F10/28B22F10/20B22F10/80B22F10/64Y02P10/25B33Y50/00B33Y30/00B33Y50/02B23K26/342B22F10/85
Inventor 李护林杨欢庆白静王琳彭东剑王云
Owner XIAN SPACE ENGINE CO LTD
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